Tikvah
Editors’ Pick

May 29, 2019

Is Mankind Alone in the Universe?

Despite the predictions of biologists and astronomers, aliens haven’t turned up.

According to the dominant theory among biologists, life originated on our planet when peculiar combinations of chemicals—known to form spontaneously under the proper circumstances—came together in just the right way to form cells; from these cells, the theory holds, all subsequent life evolved. Astronomers, writes Ethan Siegel, have meanwhile concluded that “there are there are nearly 1022 potentially habitable, Earth-like planets containing the right conditions and ingredients for life.” It would therefore stand to reason that not only did life evolve on some of these, but on some it evolved into an intelligent form capable of technological advancement. Where, then, are these aliens?

SaveGift